button {
  display: block;
  position: relative;
  top: 0;
  border: 0;
  cursor: pointer;
  background: #9ccc65;
  color: white;
  border-radius: 3px;
  line-height: 1;
  font-size: 20px;
  padding: 15px 25px;
  outline: 0;
  margin: 20px;
  box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
}
button.shiny {
    background: #007eaf;
    background: linear-gradient(-45deg, #2284fb9c 50%, #0a0e928f 60%, #2e5ad4a1 70%);
    background-size: 600% 100%;
    -webkit-animation: shine 20s infinite;
    animation: shine 20s infinite;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
    -webkit-animation-timing-function: linear;
    animation-timing-function: linear;
}

@-webkit-keyframes shine {
  0% {
    background-position-x: 400%;
  }
  50% {
    background-position-x: 0%;
  }
  100% {
    background-position-x: -400%;
  }
}

@keyframes shine {
  0% {
    background-position-x: 400%;
  }
  50% {
    background-position-x: 0%;
  }
  100% {
    background-position-x: -400%;
  }
}
.validate-box {
  background-color: #fff;
  border-radius: 10px;
  padding: 30px 50px 30px 28px;
  min-width: 420px;
  max-width: 420px;
  visibility: hidden;
}

.btn-update {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 40px;
  padding: 10px 20px;
  display: block;
  z-index: 999;
  transform: translate(-50%, -50%);
  color:#b2d8dc;
}